div,
body,
html,
a,
h1,
h2,
h3,
h4,
h5,
h6,
ul,
p,
input,
form,
select,
option,
button,
li {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}
ul,
li {
  list-style: none;
}
a {
  text-decoration: none;
  color: black;
}
